Home / 878,789.72-1,212,713.78-496,816.61

Finding the Fourth Proportional to 878,789.72, 1,212,713.78 and 496,816.61

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Solution

The fourth proportional to 878,789.72, 1,212,713.78 and 496,816.61 is: 685,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,789.72 : 1,212,713.78 = 496,816.61 : x
  2. Step 2: Convert to fraction form
    878,789.72/1,212,713.78 = 496,816.61/x
  3. Step 3: Cross multiply
    878,789.72x = 1,212,713.78 × 496,816.61
  4. Step 4: Simplify right side
    878,789.72x = 602,496,340,532.23
  5. Step 5: Solve for x
    x = 602,496,340,532.23/878,789.72
  6. Step 6: Final answer
    x = 685,597.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.